Non-linear electromagnetic response of grapheneS. A. Mikhailov
Institute for Physics, University of Augsburg - D-86135 Augsburg, Germany
received 27 April 2007; accepted in final form 4 June 2007; published July 2007
published online 28 June 2007
It is shown that the massless energy spectrum of electrons and holes in graphene leads to the strongly non-linear electromagnetic response of this system. We predict that the graphene layer, irradiated by electromagnetic waves, emits radiation at higher frequency harmonics and can work as a frequency multiplier. The operating frequency of the graphene frequency multiplier can lie in a broad range from microwaves to the infrared.
73.50.Fq - High-field and nonlinear effects.
81.05.Uw - Carbon, diamond, graphite.
78.67.-n - Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures.
© Europhysics Letters Association 2007